What is the purpose of using a torque wrench in power transmission assembly?

Using a torque wrench in power transmission assembly is essential because it allows for the application of a specific amount of torque to fasteners accurately. This precision is critical in ensuring that the fasteners are tightened to the manufacturer's specified torque settings, which is vital for the integrity and performance of the assembly.

If fasteners are not tightened to the correct torque level, it can lead to various issues such as loose connections, which may result in vibrations, mechanical failure, or even catastrophic failures in machinery. On the other hand, over-tightening can cause damage to the fasteners and the components being joined, leading to stress fractures or stripping of the threads. Therefore, the torque wrench serves a fundamental role in achieving the needed balance of strength and reliability in power transmission assemblies.

Other considerations, such as loosening fasteners, tightening them to maximum strength, or measuring speed, do not accurately represent the primary function of a torque wrench in this context. Instead, the focus remains on the precise application of torque to achieve safe and effective assembly of components.